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Ground influence on airfoils (1921)
NASA Technical Reports Server (NTRS) · leaf 14
Drag! 1 ! 1 I in tbrms ;of chord. Diatanpe above ground i * 5 ; i - fo i ! l[5 i 4 5 6 7 8 9 10 11 Inches between chords at 0°. Ground at varying distance (Reflection Keth Fig. 6. U.S.A.27. Readings on V/ing 1. T7ind velocity 30 m«p«hNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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